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| self-nourishing; Use the energy from light to produce organic molecules |
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| living organisms that contain carbon atoms |
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| organic molecules that a plant produces must be |
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- storable
- capable of being broken back down to yield energy for use in growth
- reasonably compact so that enough energy can be stored for growth
- transportable
- stable and non-toxic
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| process on which photoautotrophs rely to capture that light energy and to produce carbon based organic molecules |
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| Removal of CO2 from the atmosphere (eg: planting trees) |
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| removes carbon from the atmosphere and incorporates it into organic molecules (secure or sequester, rather than to repair) |
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| Particles in light that provide the energy that drives photosynthesis |
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| equation that summarizes photosynthesis |
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Definition
water + carbon dioxide -> oxygen, water and simple sugars
12H20 + 6CO2 -> 6O2 + 6H2O + C6H12O6 |
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| Two reactions used for photosynthesis |
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Definition
| Light Reactions and Light Independent Reaction |
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Definition
| assist chlorophyll in light capture and energy transfer; contribute to the regulation and moderation of excessive excitation of pigment molecules |
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Definition
| chlorophyll molecule uses that wavelength of light |
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Definition
| Doesn't use that particular color; reflects it away |
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| First step in photosynthesis |
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Definition
| light hits antenna complex,energy from the light photon pushes up an electron to a higher orbital; |
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Definition
| electron drops back home, releases the energy it absorbed from light; released energy can be passed to another pigment molecule |
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| 3rd step (Reaction center) |
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Definition
| photon resonantes to reaction center where processes take place |
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Term
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Definition
1st major chem reaction in photosynthesis;
Water is split when the reaction center grabs electrons from water;
separates water into (O2), hydrogen ions (H+) and electrons (e-). |
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Term
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Definition
| energy that was present in the photons of light has been transferred to the hydrogen ions and the electrons. |
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| Half-reaction for Light Reaction |
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Definition
| 12H2O -> 6O2 + 24e- + 24H+ |
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Term
| Light-Independent Reaction (LIR) |
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Definition
| second part of photosynthesis. It takes place in the stroma |
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Definition
1st step of LIR;
NADPH and ATP and CO2, carry the energy from light, used to fix carbon into G3P |
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Definition
triose phosphate 3-carbon sugar (triose) with phosphorus and oxygen atoms; moves out of the chloroplast into cytoplasm;
two of these three-carbon molecules are combined to produce glucose and fructose |
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Definition
combine to form sucrose;
transported by the phloem throughout the plant to provide energy |
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| half-reaction for the LIR: |
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Definition
| 24H+ + 24e- + 6CO2 -> C6H12O6 + 6H2O |
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Definition
| Structures in stroma; surrounded by thylakoid membranes |
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| pigments located here; arranged in antenna complex |
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| captures and routes the energy from sunlight down to reaction center. |
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| regions of photosynthesis and sugar production |
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Definition
| regions that do not support photosynthesis (like roots) but still need organic molecules to survive |
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Definition
| Movement of solutes like sucrose from source to sink through the phloem; provides energy to plant |
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| compounds result from the production of long glucose chains |
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Definition
| Starch (energy storage compound) and cellulose (makes up cell wall and key to a plant's structural integrity) |
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Definition
| molecules are attached by bonds between carbon #1 and carbon #4 |
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Definition
| Occurs in starch; is angled down |
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Definition
| Results in cellulose; is angled up |
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| molecule into which carbon extracted from atmospheric CO2 is sequestered |
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